Furnace.



B. PERRY.

FURNACE.

APPUCATIOH HLED MAR.10,1917. I 1,248,703 Patented Dec. 4,1917;

2 SHEETS-SHEET l.

for!" B. PERRY. FURNACE. APPLICATION FILED MAR: I0. I917. 1,248,703. Patented Dec. 4,1917.

2 SHEETS-SHEET 2.

BENJAMIN PERRY, 'OF CLEVELAND, OHIO.

FURNACE.

Specification of Letters Patent.

Patented Dec. 4, 191.7.

Application filed March 10, 1917. Serial No. 154,013.

To all whom it may cancer Be it known that I, BENJAMni PERRY, a citizen of the United States, resident of Cleveland, countyof Cuyahoga, and State of Ohio, have invented. new and useful Improvements in Furnaces, of which the following IS a specificatlon, the principle of the invention being herein explained and the best mode'in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to furnaces andparticularly to that class of such structures as 'use coke gas, coal gas, etc., or in season natural gas, mixed with air to form the combus-v tihlc heating mixture. 'It is the object of,

my invention to so dispose the natural gas burners relatively to the furnace structure that the heat therefrom will not deleteriously affect the roof of the furnace after the brick arch between the artificial gas port and the air ports has been burned away, and yet preserve the maximum heating-or cutting effect. before said arch is burned away, as hereinafter fully described. 7

The annexed drawings and the following description set forth in detail certain means embodying, my invention, the disclosed means, however, constituting but one of ya rious mechanical forms in which the principle 9f the invention may be employed.

In said annexed drawings Figure 1 represents a vertical longitudinal section of my improved furnace, the

lcftha'nd' end thereof being taken in a lane through an artificial gas port 2 an rightrhand end thereof being taken in a the plane through'an air port 3; Fig.2 represents a longitudinal section of a fragmen- .taryportion' of such furnace, showing the brick arch partially burned away and also tieal transverse section-taken in the plane illustrating a modified form of structure in which the arrangement'of the natural gas bllIIlGI' is somewhat difierent from that illus t'rated in Fig. 1 and Fig. 3 represents a verindicated by the lines 33, Fig. 1.

I have illustrated in the drawings a furnace with the usual main structure 1 and roof 1'. Said furnace is a reversible one in that the direction of movement of the heating-gases versa, and 0 this end when the movement of said gases is from left to right, I show acentral gaspo t 2 upon the left-hand 0f ay be from left to right or vice.

Fig. 1, and two outer air ports 3, said gas and air ports being separated in the end of the main structure 1 by suitable partitions and in the top part of the structure by the brick arch tand converging tomerge on'e with the other at the point 5 which is the normal mixing point of the gas and air, is

being presumed that coke gas, coal gas or other gas derived from other opcrations'is being used. The mixing point 5, as will be plainly noted in the'drawing, is the outer endof the combined mixing, combustion and heating chamber of the furnace. Said ports 2 and 3 comprise substantially vertical portions and portions inclined somewhat. from the horizontal, which inclined portions con verge at the mixing point 5, as before mentioned. Said dividing arch 4 is disposed in jplanes somewhat inclined from the horiionta], as plainly shown in the drawing.

'Ijhe burning gases pass through the struct'ttre and out through the two ports 3 and the port 2, in the right-hand end of the structure. to. the stack. \Vhen the direction of movement of the heating ases is from right to left, the right-hand port 2 is a gas inlet and the twori'ght-hand ports 3 are air inlets,:and the three ports at the left-hand end of, the structure are exhaustports for the consumed. gases.

All that has been heretofore described, in so far as it relates to a reversible furnace using producer gas, is well-known and I shall now describe in' relation thereto the use and disposition of natural gas burners to be used in season when coke gas, coal gas and analogous fuel is not available.

The brick arches 4 are burned away in time under the use of artificial gas andgreatly deteriorated so that they expose the roof 1' of the furnace structure'to burning gases which are swept up'through the deteriorated arch by the upward movement of the air through the port 2,.wben the conditions are such that the natural gas burner 6 is utilized, the same being in the position in which burner G is shown in Fig. 1. Also, the

b'urning gases are swept so far awa from plainly shown in Fig. 1. Now, when the brick arches 4 have deteriorated so that burning gases would be swept therethrou h to the damage of the roof 1, I shut 0 the branch pipe 7 ,by means of cock 7 and utilize branch pipei 9, it also having a suitable cock 9. It will-be noticed that the burner 8 thus utilized is disposed adjacently to the inner end of the arch 4 so that the sweep of the air through that part of the passage 2 which is adjacent to said burner 8, being in a generally horizontal direction, if not positively downwardly, as shown in Fi 1, as also the sweeping and blanketing e ect of the airthrough passages 3 above the arch 4, will cause the heating gases to be carried longitudinally through the furnace structure andthrough the steel to be cut and not, against the roof. I

In Fig. 2 I have illustrated a modified form of structure for thus protecting the roof 1 in that, instead of uslng, before the brick arches 4 are burned away, a natural gas burner in the position shown for burner 6, I use burner 8 disposed adjacently to the inner end of the brick arch 4 all the time, so that it is not necessary to change from one natural gas burner to another, after the said arches havebeen burned away. The form of structure shown in Fig. 1, however, is preferable inasmuch as the location therein shown of the burner 6 furnishes a, sharper flame which will cut the metal .more efliciently than will the burner located at the point 8, the burner 6 being farther from the center of the furnace and providing a better mixture than when the burner is located at the point 8. I have ascertained, however, that on the whole it is better to suffer such disadvantage as accrues from the location of the burner 8, when the arch 4 is burned away, rather than to shut down the furnace immediately and repair the arch, or to have the roof 1 deteriorated by using the burner at the position 6.

Itshould be noted, of course, that when the natural gas burners are used, all of the ports 2-and 3 are open, '5. e.,'they are air ports. Further, when it is desired to change from natural gas back to coke gas, coal gas or similar heating medium, for any reason, because of the proper season, etc., the furnace is shut down, if the brick arches 4 are deteriorated to such a point that there is left no nose on the arch projecting beyond the vertical planeof'the inner wall of the passage 2 and said arches rebuilt before the furnaces are utilized with said artificial gas, The arch 4, shown in Fig. 2 as quite largely burned away, has not been burned to a point where it cannot be utilized with regenerated gas, inasmuch as there is still left to the arch "a nose projecting beyond the vertical plane containing the inner wall of the gas passage 2. A slight further deterioration of said clined somewhat from the horizontal, the

latter portions communicating at their inner ends with said chamber; of an auxiliary gas upp y terior 0 said main body structure adjacently to the outer end of said chamber, and means for controlling the flow of gas throughsaid last-named passage.

2. In furnaces, the combination of a main body structure formed with a verticallyrdisposed end partition and a. dividing arch inclined somewhat from the horizontal, said partition and arch creating air and gas paspassage communicating with the in-' sages Comprising vertically disposed and inclined portions; a mixing, combustion and heating chamber communicating with said inclined portions of said passages; an auxiliary gas supply passage communicating with the interior of said main body structure adj'acently to the inner end o said arch; and means for controllingrn'e flow of gas through said last-named passage.

3. In furnaces, the combination of a main body structure; gas and air passages and a mixing chamber therein; an auxiliary gas supply passage, said latter passage branching and Communicating with the interior of said main body structure at a plurality of points; and means for independently controlling the flow of gas through the several branches of said auxiliary passage.

4. In furnaces, the combination ofa main body structure, gas and air passages and a mixing chamber therein; an auxiliary gas supply passage, said latter pa age branching and intersecting said first-named gas passage at a plurality of points; and means for independently controlling the flow-of gas through the several branches of said auxiliary passage.

5. In furnaces, the combination of a main body structure; gas and air passages and a mixing chamber therein; an auxiliary gas supply passage, such latter passage branching and communicating with the interior of said main body structure at a plurality of points, one of said points being adjacent to said mixing chamber; andmeans for indemg and intersecting said first-named gas passage at a plurality of points, one of said points being adjacent to said mixing chamber; and means for independently controlling the flow of gas through the several branches f said auxiliary passage.

7. In furnaces, the combination with a main body strnet'ure formed with a dividing arch and gas and air passages separated for some distance from each other by said art-h, said gas and air passages eonrerging adjaeently to the inner end of said areh: of an auxiliary gas supply passage ronnnunieating with the interio of said main body structure adjaeently to the inner end ol said arch. and means for controlling the flow oi gas through said auxiliary passage.

In l'urnaees. the eoiubinat'ion with a main body struetul'e fornu'l at either end with a, dividing arr'h disposed at an inelination somewhat from the horizontal and and air passages separated for some distant-e from eat-h other by said arches, said gas and air passages eonrerging adjaeently to the inner end of saidarehes; ot' auxil y; gas supply passages interseeting said firstnained gas passages, and means for eontrolling tlntlow of gas through said auxiliary passages.

9. In 'l'urnaees. the combination with a main body tl'llt'llllt formed at either end with a dii'idin'g arch and gas and air pas sages separated for some distant-\- l'roni eaeh other by said art-hes, said gas and air pas sages merging zuljaeently to the inner ends of said are-h s; of auxiliary gas supply passages intersecting said first-named gas pas-- vsages separated sages adjaeently to said inner ends of said arches re.-.-*peetirely and means for controlling the [low of gas through said auxiliary passages. a

It). In 'l'urnaees, the combination of a. main body strut-lure lorined at either end with (ll\'itllll 1f2\l"ll and gas and air pasl'or some dislain'e from each other by said art/hes. said gas and air passages nn-rging adjaeently to the inner ends of said art-hes: auxiliary gas supply passages. said latler passages eaeh branrhing and interserting said tirstanuned gas passages. ])ttll\'('l at a plurality ol points: and means for independently (fOIltrolling the [low of gas through the several brain-he ol' til ll ol said auxiliary passages.

I]. In furnaves. the combination of a main body strueture l'or'nn'd at either end with a dividing ill't'l! and gas and air passages separated for some distance :lroni ea h other by said areln-s. said gas and air passages merging iuljaeently to the inner ends of said arehes: auxiliary gas supply passages. said latter passages eaeh brain-hing and interse ting said lirst-nann-d gas pas-- sages. respeetirely. at two points, one of said points being adjarenl to v aid inner ends ol said art-hes: and meansfor iinlependently eontrolling the [low of gas through the two branehes ot' eaeh of said auxiliary passages.

Signed by me. this 24-" day of February,

"nEXJArnN PERRY. 

